Convert JSON arrays to CSV format or CSV back to JSON. Supports nested objects, custom delimiters, and file download.
JSON (JavaScript Object Notation) and CSV (Comma-Separated Values) are two of the most common data interchange formats. JSON is widely used in APIs and web applications, while CSV is the standard for spreadsheets and data analysis tools.
This tool bridges the gap between these formats, allowing you to seamlessly convert JSON arrays of objects into CSV tables and vice versa. Nested objects are automatically flattened using dot notation, making complex JSON structures easy to work with in tabular format.
Data Export
Export JSON API responses to CSV for sharing and archiving
Spreadsheet Import
Convert JSON data to CSV for use in Excel or Google Sheets
Report Generation
Transform JSON datasets into CSV reports for stakeholders
Data Analysis
Prepare JSON data as CSV for analysis tools like pandas or R
How do I convert JSON to CSV?
Paste your JSON array of objects into the input area and click 'Convert'. The tool automatically extracts all keys as column headers and converts each object into a CSV row. You can then preview the result and download it as a .csv file.
Does it handle nested JSON objects?
Yes! Nested objects are flattened using dot notation. For example, an object like {"address": {"city": "NYC"}} becomes a column named 'address.city' with the value 'NYC'. Arrays within objects are serialized as JSON strings.
What delimiters are supported?
The tool supports four delimiters: comma (,), tab, semicolon (;), and pipe (|). The default is comma, which is the standard CSV format. You can change the delimiter in the options panel before converting.
Can I convert CSV back to JSON?
Yes! Switch to the 'CSV to JSON' tab, paste your CSV data, and click 'Convert'. The tool parses the CSV headers and rows into an array of JSON objects. It also supports the same custom delimiters.
Is there a size limit for conversion?
Since all processing happens in your browser, there is no server-side limit. However, very large files (over 50MB) may cause slowdowns depending on your device. For best performance, keep input under 10MB.
Privacy First
All conversion happens in your browser. Your data never leaves your device.
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